The goal of this work is to use the supported ZnO–FeO onto nano-clinoptilolite particles (NCP) in the photocatalytic degradation of the pollutants present in a fish ponds wastewater as a real sample under solar irradiation. Ion exchanging of the prepared ball-milling NCP in aqueous solution containing Zn(II) and Fe(II) cations and calcinations of the ion exchanged material at 450 °C led to the formation of ZnO–FeO/NCP catalyst. The raw and modified NCP samples were characterized by XRD, FT-IR, DRS and SEM. The degradation extent of the pollutants was calculated using UV–vis absorption of samples before and after irradiation process. The optimum values for the affecting experimental parameters were obtained as: 0.1 g L−1 of the photocatalyst, initial concentration of wastewater and pH 8.3.